Product Categories
Vibrating Fork Level Switch
MODEL: VFLS88
The working principle of vibrating fork level switch is based on vibrating tuning fork’s natural frequency and amplitude measurement. A specially shaped tuning fork is continuously vibrating at its natural frequency using piezo-electric elements and changes in amplitude in the presence of application media are measured. The pressure applied on diaphragm drives the vibrating fork’s tines apart from each other and return to their original position when the pressure is removed. As the material level increases and comes in contact with the vibrating fork tines, the amplitude of oscillation of vibrating fork level switch dampens or decreases as it covered with the solid application media. The change in amplitude is detected by the microprocessor leading to a switching decision. When the amplitude goes below a set threshold, vibrating fork type level switch trigger changes in output
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Sales Support
+917021306718
Technical Support
+918591988100
Product Features
Compact vibrating fork level switch for free-flowing solids, granules and powders
- Universal Power Supply: 18 – 55V DC & 90 – 265V AC
- Application Temperature Range : up to 200° C
- Outputs: DPDT Relay, Open Collector PNP Output
- Process Connection: Threads and Flanges
- Polished & hygienic fork
- Shorter Probe Length
- Fast Switching: 0.5s & 0.8s options available
- Certifications: Flame Proof Housing IIC, IP-68 Housing
Technical Data
●Power supply: 24VDC (standard); 220VAC (optional)
●Ambient temperature: -20℃～70℃
●Medium temperature: -40℃～150, high temperature optional
●Media density: minimum 0.6g/cm3
●Process connection: thread, chuck or flange
●Output mode: SPDT 220VAC/24VDC 4A relay (10A optional) or RS485 bus communication mode
●Working pressure: ≤2MPa or ≤6.4Mpa
●High and low alarm: can be set to high or low alarm
●Delay: 1～30s (For longer time, please specify when ordering)
●Shell protection: IP65 or above
●Power consumption: 3W
●Electrical interface: M20*1.5 other optional
●Instrument internal circuit anti-surge voltage: 1500VAC
Technical Data
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Housing
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Housing enclosure protects the electronics of the device. Depending on installation in hazardous areas and properties of material; a suitable housing can be chosen.
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SCUTE-S4: IP-68 weather proof Stainless steel housing prevent corrosion in areas of installation when corrosion of alumninium housings is possible. This will help prolong the usable life of the vibrating fork level switch.
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SCUTE: Aluminum pressure die cast weatherproof housing(IP 68) is the most commonly used housing.
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FP2C: A flameproof housing(IP 66) of vibrating or tuning fork level sensor is capable to protect the electronics of level sensor from any explosion under operational conditions.
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Process Connection
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Screwed Thread : Screwed BSP threads are most popular, a fork-type level switch with screwed thread connections is used for pipe fittings and is available in arrangement ranging: 1-1/2",BSP/NPT (SS 304, SS 316).
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Flange : Vibrating fork level switches are also available with flange connections, flange mounting for solid applications are rare.
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Vibrating Fork
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100mm: Shorter tines length help with faster switching times of 0.5 seconds.
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155mm: Standard fork lengths designed to have more amplitude of oscillation, this helps in preventing builup on the tines.
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Standard :
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Shot blast finish, standard for all industrial application
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Hygienic :
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Specially polished finish for hygienic applications in pharmaceutical and food industries
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Applications
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Packaging Machines
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Large production of industries requires fast automated packaging machines to fill the appropriate amount of material in the packets without any failure and material loss. These increase requirement of industrial sites demands level instruments with fast switching feature. These process sensors must be compact in size to get fit in any small automated machines.
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PET / PVC chips
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PET is the largest consumed component used for packaging and bottling in large amounts. It is commonly used for making filament yarn, POY, etc. To form these durable components, the process is followed rigid environmental conditions. These PVC chips storage need level detection process in the presence of water.
The vibrating level switch is integrated with a special algorithm to detect the application media in the presence of water. These vibronic level switches have the surplus benefit of having shorter probe lengths for small storage tanks.
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Cement Manufacturing Plant
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The complex manufacturing process of cement possess grinding and mixing of raw materials at high temperature. These powdery materials kept in large containers and tanks are required for further operations. The storage process is performed with level measuring devices to avoid any material loss.
Vibrating or tuning fork level sensors are suitable that provide end-to-end support in the high-temperature processes to produce an efficient resultant.
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VFLS88
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Item No
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Type
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VFLS88
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Tunning Fork Switch
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Code
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Medium Type
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0
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Liquid
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1
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Powder
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Code
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Supply Voltage
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V1
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24 VDC
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V2
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220V AC
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Code
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Thread Spec
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P21
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1” NPT
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F
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Flange
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Code
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Additional Functions
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I
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Customized Insertion Depth
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D
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Explotion proof Exd II CT6
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VFLS88
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0
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V1
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P21
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Exported to more than 150 countries around the globe, 10000 sets/month production capacity!
